Date: Mon, 11 Aug 2025 16:12:09 +0900 From: Jaeyoon Choi <j_yoon.choi@samsung.com> To: Warner Losh <imp@bsdimp.com> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: How can I measure code coverage for a device driver? Message-ID: <20250811071209epcms2p29651ff50b9f1d9aa2b48b8cf8d888618@epcms2p2> In-Reply-To: <CANCZdfrAa8Ogx4s3Wb0_YFR%2BKk=Fdf5kpMyGsLPA4xy4yiSPsw@mail.gmail.com> References: <CANCZdfrAa8Ogx4s3Wb0_YFR%2BKk=Fdf5kpMyGsLPA4xy4yiSPsw@mail.gmail.com> <20250807001811epcms2p247a7255786c41efb68fd20e7c8cc55fa@epcms2p2> <CGME20250807001811epcms2p247a7255786c41efb68fd20e7c8cc55fa@epcms2p2>
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(Sorry, I sent a wrong email before.) KCOV works well in the device driver module! However, there are some issues with certain functions not being tracked. I will try again when I have time. Thanks! Jaeyoon > I think KCOV will work better than GCOV for this, but it's been a > while since I've used either. > > Warner > > On Wed, Aug 6, 2025 at 6:19 PM Jaeyoon Choi <j_yoon.choi@samsung.com> wrote: > > > > Hi, > > > > I'd like to measure line/branch coverage while testing UFSHCI device driver > > on FreeBSD. > > Which tools or workflow do you recommend for collecting coverage data from > > a device driver module? > > > > I've seen references to GCOV and KCOV, but I’m not sure which is the best fit > > for a device driver scenario. > > > > Thanks in advance, > > Jaeyoon Choi > > > >
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